Arlington Water Pollution Control Plant Expansion

Client:County Board of Arlington, Virginia

Location:Arlington, Virginia, USA

Contract Amount:$257,000,000

Project Size:40 million gallons per day

Markets Served:Water

Architect/Engineer:Malcolm Pirnie

Alberici constructed a wastewater treatment plant that sharply reduces pollutants entering the Potomac River near Washington, D.C. The $257 million project in Arlington, Virginia is part of a long-range capital improvement program by the County of Arlington to comply with environmental laws.

The plant expansion increased the capacity of the existing facility from 30 million gallons per day to 40 million gallons per day. This required constructing three new secondary clarifiers, two new existing aeration basins, new pump stations and new storage tanks. All of the work was performed without interrupting service to the plant’s regional customers in Arlington and neighboring localities.

Alberici generated value engineering suggestions to reduce the project cost by $29 million and at the same time, improved the project schedule. Alberici recorded more than one million labor hours without a lost-time incident. At its peak, the project employed 140 workers.

Alberici partnered with owner's representative AECOM and engineer Malcolm Pirnie to complete this project six months ahead of schedule.​